Officials say Sanders bragged to his friends about the crimes and even posted photos of his firearms on Facebook.

Sanders pleaded guilty to one count of conspiracy to commit armed robbery, two counts of armed robbery and two counts of possessing and brandishing a firearm in furtherance of a crime of violence, officials said.

Sanders is due back in court on Feb. 20 and faces a minimum of 32 years in prison and a maximum sentence of life behind bars.